#define _CRT_SECURE_NO_WARNINGS 1
#include<string.h>
#include<stdio.h>
#include<assert.h>
char* my_strcat(char* dest,char* source)
{
	assert(dest && source);
	char* ret = dest;
	while (*dest)
	{
		dest++;
	}
	while (*dest++ = *source++);
	return ret;
}
int main()
{
	
}